Maxx Cold MXX-23FHC User manual

Upright Refrigerator & Freezer
Service, Installation and Care Manual
Please read this manual completely efore attempting to install or operate this equipment.
Notify carrier of damage! Inspect all components immediately.
IMPORTANT INFORMATION
READ BEFORE USE
PLEASE SAVE THESE INSTRUCTIONS!

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COMMECIAL REFRIGERATOR SAFETY
Your safety and the safety of others are very im ortant.
We have provided ma y importa t safety messages i this ma ual a d o your applia ce. Always read a d
obey all safety messages.
Our roduct instructions will be u loaded on our com any official website.
This is the Safety Alert Symbol. This symbol alerts you to pote tial hazards that ca
kill or i jure you a d others. All safety messages will follow the Safety Alert Symbol
a d either the words” DANGER”, “WARNING” or “CAUTION”.
Da ger mea s that failure to heed this safety
stateme t may result i severe perso al i jury or
death.
War i g mea s that failure to heed this safety
stateme t may result i exte sive product
damage, serious perso al i jury, or death.
Cautio mea s that failure to heed this safety
stateme t may result i mi or or moderate
perso al i jury, or property or equipme t damage.
All safety messages will alert you to what the pote tial hazard is, tell you how to reduce the cha ce of i jury,
a d let you k ow what ca happe if the i structio s are ot followed.
If the supply cord is damaged, it must be replaced by the ma ufacturer, its service age t or similarly
qualified perso s i order to avoid a hazard.
This applia ce is ot i te ded for use by perso s (i cludi g childre ) with reduced physical, se sory or
me tal capabilities, or lack of experie ce a d k owledge, u less they have bee give supervisio or
i structio co cer i g use of the applia ce by a perso respo sible for their safety.
Childre should be supervised to e sure that they do ot play with the applia ce.
This applia ce ca be used by childre aged from 8 years a d above a d perso s with reduced physical
se sory or me tal capabilities or lack of experie ce a d k owledge if they have bee give supervisio or
i structio co cer i g use of the applia ce i a safe way a d u dersta d the hazards i volved. Childre
shall ot play with the applia ce. Clea i g a d user mai te a ce shall ot be made by childre without
supervisio .
Keep the applia ce a d its cord out of reach of childre less tha 8 years.
Do ot store explosive substa ces such as aerosol ca s with a flammable propella t i this applia ce.
The applia ce use flammable i sulatio blowi g gas C5H10, disposal of the applia ce shall i accorda ce

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3
with the regulatio s of local authorities.
The key for applia ce electric box should be safe kept by qualified perso s i order to avoid a hazard
WARNING: Keep ve tilatio ope i gs, i the applia ce e closure or i the built-i structure, clear of
obstructio .
WARNING: Do ot use mecha ical devices or other mea s to accelerate the defrosti g process, other tha
those recomme ded by the ma ufacturer.
WARNING: Do ot damage the refrigera t circuit.
WARNING: Do ot use electrical applia ces i side the food storage compartme ts of the applia ce, u less
they are of the type recomme ded by the ma ufacturer.
Ha dli g, movi g, a d use of the refrigerator or freezer to avoid either damagi g the refrigera t tubi g, or
i creasi g the risk of a leak
L’opératio , le mouveme t et l’utilisatio du réfrigéra t ou le co gélateur doive t éviter les dommages du
tuyau réfrigéra t ou le rique de la fuite.
Cautio – Risk of Fire or Explosio due to Flammable Refrigera t Used. Follow Ha dli g
I structio s Carefully i Complia ce with U.S. Gover me t Regulatio s.
Compo e t parts shall be replaced with like compo e ts a d that servici g shall be do e by factory
authorized service perso el, so as to mi imize the risk of possible ig itio due to i correct parts or
improper service.
Les pièces de recha ge doive t être remplacées par les compo e ts relatifs et les opératio s doive t être
faites par les professio els afi de mi imaliser le risque d’allumage à cause des parts i corrects ou des
opératio s impropres.
CAUTION – Risk Of Fire Or Explosio Due To Pu cture Of Refrigera t Tubi g; Follow Ha dli g I structio s
Carefully. Flammable Refrigera t Used
DANGER: Risk of child e trapme t. Before you throw away your old refrigerator or freezer:
Take off the doors
Leave the shelves i place so that childre may ot easily climb i side.

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CONTENTS
RECEIVING & INSPECTING EQUIPMENT………………………………………..…………………4
SPECIFICATIONS…………………………………………………….……………………….………5
INSTALLATION………………………………………………………………………….…………..….6
OPERATION………..……………………………………………………………………..……………7
MAINTENANCE……………………………………………………………………….……………….9
All rights reserved. Reproduction without written permission is prohibited.
SERIAL NUMBER INFORMATION
The serial number of all self-contained refrigerators and freezers is located inside the unit on the left hand
side near the top on the wall. Always have the serial number of your unit available when calling for parts
or service.
This manual covers standard units only. If you have a custom unit, consult the customer service department
at the number listed on the last page.
RECEIVING AND INSPECTING THE EQUIPMENT
Even though most equipment is shipped crated, care should be taken during unloading so the equipment is not
damaged while being moved into the building.
1. Visually inspect the exterior of the package and skid or container. Any damage should be noted and reported
to the delivering carrier immediately.
2. If damaged, open and inspect the contents with the carrier.
3. In the event that the exterior is not damaged, yet upon opening, there is concealed damage to the equipment,
notify the carrier. Notification should be made verbally as well as in written form.
4. Request an inspection by the shipping company of the damaged equipment. This should be done within 10
days from receipt of the equipment.
5. Be certain to check the compressor compartment housing and visually inspect the refrigeration package. Be
sure lines are secure and base is still intact.
6. Freight carriers can supply the necessary damage forms upon request.
7. Retain all crating material until an inspection has been made or waived.
WIRING DIAGRAM………………………………………………………………………………….........13
SAFETY PRECAUTIONS...........................................................................................................11
ELECTRICAL WARNING...........................................................................................................11
TROUBLE SHOOTING..............................................................................................................12

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SPECIFICATION
MODEL#
UPRIGHT REFRIGERATOR & FREEZER
V/Hz/Ph AMPS
STORAGE
CAPACITY
Cu-ft HP BTU/H
CHARGE
OZ
SHIP
WEIGHT
LBS
NEMA
PLUG
115/60/1 23 1/4 830 3.35 232 5-15P
115/60/1 23 3/4 1966 4.23 249 5-15P
3
7
NOTICE:
LOSS OR SPOILAGE OF PRODUCTS IN YOUR REFRIGERATOR/FREEZER IS NOT COVERED
BY WARRANTY. IN ADDITION TO FOLLOWING RECOMMENDED INSTALLATION PROCEDURES.
PLEASE RUN THE REFRIGERATOR/FREEZER 24 HOURS PRIOR TO USAGE. THANK YOU.
MXX-23RHC
MXX-23FHC

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INSTALLATION
Location
Units represented in this manual are intended for indoor use only. Be sure the location chosen has a floor
strong enough to support the total weight of the cabinet and contents. A fully loaded unit can weigh as much
as 1500 pounds. Reinforce the floor as necessary to provide for maximum loading. For the most efficient
refrigeration, be sure to provide good air circulation inside and out.
Inside cabinet:
Do not pack the units so full that air cannot circulate. The refrigerated air is discharged at the top rear of the
unit. It is important to allow for proper air flow from the top rear to the bottom of the unit. Obstructions to
this air flow can cause evaporator coil freeze ups and loss of temperature or overflow of water from the
evaporator drain pan. The shelves have a rear turn up on them to prevent this. However, bags and other
items can still be located to the far rear of the cabinet. Air is brought into the evaporator coil with fans mounted
to the front of the coil.
Outside cabinet:
Be sure that the unit has access to ample air. Avoid hot corners and locations near stoves and ovens.
It is recommended that the unit be installed no closer than 2" from any wall with at least 12" of clear space above
the unit.
Stabilizing
All models are supplied with casters for your convenience, ease of cleaning underneath and for mobility. It is
very important, however, that the cabinet be installed in a stable condition with the front wheels locked while
in use.
Should it become necessary to lay the unit on its side or back for any reason, allow at least 24 hours before
start-up to allow compressor oil to flow back into place. Failure to meet this requirement can cause
compressor failure and unit damage.
Unit repairs will not be subject to standard unit warranties if due to improper installation
procedures.
Electrical connection
Refer to the amperage data on page 3, the serial tag, your local code or the National Electrical Code to be sure
the unit is connected to the proper power source.
The unit must be turned OFF and disconnected from the power source whenever
performing service, maintenance functions or cleaning the refrigerated area.
NOTE
DANGER

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OPERATION
Do not throw items into the storage area. Failure to heed these recommendations could result in damage to
the interior of the cabinet.
Refrigerated cycle
Refrigerators: During the refrigeration cycle, the evaporator fans wilt run continuously even when one
or more doors are open. The door switch will activate the lights when opened.
1. Every 6 hours, the unit will turn off and allow the evaporator coil to defrost. The controller now ,tsorfed fo setunim 02 retfa ro F°14 sehcaer erutarepmet lioc eht nehW .lobmys tsorfed eht syalpsid
the unit will turn on again.
2. Anti-condensation heaters on door frames work in conjunction with the compressor.
3. The factory setting for the temperature range is 34 ° to 38°
Freezers: During the refrigeration cycle the controller supplies power to the condensing unit and
evaporator fan motors. The evaporator fans will run at any time when the evaporator coil temperature
is below 54°F, they will also keep running when door is open but cycle off during a defrost period.
The door switch will activate the lights when opened.
1. Every 6 hours, the unit will turn off and electric heater will turn on to start the defrost cycle. The
controller now displays the defrost symbol. When the coil temperature reaches 45°F or after 20 minutes
of defrost, the unit will turn on again.
2. Anti-condensation heaters on door frames work in conjunction with the compressor.
3. The factory setting for temperature range is -7° to -3°
1. FRONT PANEL COMMANDS
To display target set point; in programming mode it selects a parameter or confirms an operation.
To start a manual defrost
To view the latest alarm occurrence; in programming mode it browses the parameter
codes or increases the display value
To view the latest alarm occurrence; in programming mode it browses the parameter
codes or decreases the display value
KEY COMBINATION
To lock & unlock the keyboard
To enter in programming mode
To return to the room temperature display
F.F
F.F
SO ID-STATE THERMOSTAT DESCRIPTIONS
CAUTION

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1.1 Function of LEDS
2. MAIN FUNCTIONS
2.1 HOW TO SEE THE SETPOINT
1. Push and immediately release the SET key: the display will show the set point value.
2. Push and immediately release the SET key or wait for 5 seconds to display the
sensor value again.
2.2 HOW TO CHANGE THE SETPOINT
1. Hold the SET key for more than 2 seconds to change the set point value.
2. The value of the set point will be displayed and the LED starts blinking.
3. To change the set value push the or key within 10s.
4. To set a new point value, push the SET key again or wait 10s.
2.3 HOW TO START A MANUAL DEFFROST
Hold the key for more than 2 seconds and the manual defrost will start
2.4 HOW TO LOCK THE KEYBOARD
1. Hold the and keys for more than 3s.
2. The “POF” message will be displayed and the keyboard will be locked. At this point, it will be possible only
to see the set point or the MAX or Min temperature stored.
3. If a key is pressed more than 3s the ”POF” message will be displayed.
2.5 HOW TO UNLOCK THE KEYBOARD
Hold the and keys together for more than 3s, till the “POF” message is displayed.
3. ALARM SIGNALS
HOW TO SEE THE ALARM AND
RESET THE RECORDED ALARM
1. Hold the or key to
display the alarm signals.
2. When the signal is displayed, hold
the SET key until the “rst” message
is displayed, and push the SET key
again. The “rst” message starts
blinking and the normal temperature
will be displayed.
LED MODE FUNCTION
ON Compressor enabled
Flashing -Programming Phase (flashing with )
- Anti-short cycle delay enabled
ON Defrost enabled
Flashing - Programming Phase (flashing with )
- Drip time in progress
ON Fans enabled
Flashing Fans delay after defrost in progress.
ON An temperature alarm happened
Message Cause Outputs
“P1” Room probe failure Compressor output according to par.
“Con” and “COF”
“P2” Evaporator probe failure Defrost end is timed
“HA” Maximum temperature alarm Outputs unchanged.
“LA” Minimum temperature alarm Outputs unchanged.
“dA” Door open Compressor and fans restarts
“EA” External alarm Output unchanged.
“CA” Serious external alarm (i1F=bAL) All outputs OFF.
“CA” Pressure switch alarm (i1F=PAL) All outputs OFF

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The interior and exterior can be cleaned using soap and warm water. If this isn't sufficient, try ammonia and
water or a nonabrasive liquid cleaner.
Do not use an abrasive cleaner because it will scratch the plastic and can damage the breaker strips and
gaskets.
Cleaning the Condenser Coil
The condenser coil requires regular cleaning, and is recommended every 90 days. In some instances, you may
find that there is a large amount of debris and dust or grease accumulated prior to the 90 day time frame. In
these cases the condenser coil should be cleaned every 30 days.
If the build up on the coil consists of only light dust and debris, the condenser coil can be cleaned with a simple
brush. Heavier dust build-up may require a vacuum or even compressed air to blow through the condenser
coil.
If heavy grease is present, there are de-greasing agents available for refrigeration use and specifically for the
condenser coils. The condenser coil may require cleaning with the de-greasing agent and then blown through
with compressed air.
Failure to maintain a clean condenser coil can initially cause high temperatures and excessive run times.
Continuous operation with dirty or clogged condenser coils can result in compressor failures. Neglecting the
condenser coil cleaning procedures will void any warranties associated with the compressor or cost to replace
the compressor.
Never use a high pressure water wash for this cleaning procedure as water can damage the
electrical components located near or at the condenser coil.
In order to maintain proper refrigeration performance, the condenser fins must be cleaned of dust, dirt and
grease regularly. It is recommended that this be done at least every three months. If conditions are such that
the condenser is totally blocked in three months, the frequency of cleaning should be increased. Clean the
condenser with a vacuum cleaner or stiff brush. If extremely dirty, a commercial-grade condenser cleaner may
be required. Proper cleaning of stainless steel requires soft cloths or plastic scouring pads,
NEVER USE STEEL PADS, WIRE BRUSHES OR SCRAPERS!
DANGER
DANGER
DANGER
MAINTENANCE
The unit must be turned OFF and disconnected from the power source whenever
performing service, maintenance functions or cleaning the refrigerated area.

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MAINTENANCE
Cleaning solutions need to be alkaline based or non-chloride based. If cleaners containing chlorides are
used, be sure to rinse and dry thoroughly.
Routine cleaning of stainless steel can be done with soap and water. Extreme stains or grease should be
cleaned with a non-abrasive cleaner and plastic scrub pad. It is always good to rub with the grain of the steel.
Gasket Maintenance
Gaskets require regular cleaning to prevent mold and mildew build up and also to keep the elasticity of
the gasket. Gasket cleaning can be done with the use of warm soapy water. Avoid full strength
cleaning products on gaskets as this can cause them to become brittle and prevent proper seals. Do
not use sharp tools or knives to scrape or clean the gasket which could possibly tear the gasket and rip
the bellows.
Gaskets can easily be replaced and don’t require the use of tools or authorized service technicians. The
gaskets are "Dart" style and can be pulled out of the grove in the door and replaced by pressing the new one
back into place.
Doors/Hinges
Over time and with heavy use, door hinges may become loose. If the door is beginning to sag, tighten
the screws that mount the hinge brackets to the frame of the unit. If the doors are loose or sagging, this
can cause the hinge to pull out of the frame which may damage both the doors and the door hinges.
Drain Maintenance
Each unit has a drain located inside the unit which removes the condensation from the evaporator coil and
evaporates it into an external condensate evaporator pan. Each drain can become loose or disconnected
from moving or bumping the drain. If you notice excessive water accumulation on the inside of the unit, be
sure the drain tube is connected from the evaporator housing to the condensate evaporator drain pan. If
water starts to collect underneath the unit, you may want to check the condensate evaporator drain tube to
be sure it is still located inside the drain pan. The leveling of the unit is important as the units are designed to
drain properly when on a level surface. If your floor is not level this can also cause drain problems. Be sure
SAFETY PRECAUTIONS
 This refrigerator must be properly installed and located in accordance with the Installation Instructions
before it is used.
 o not allow children to climb, stand or hang on the shelves in the refrigerator. They could damage the
refrigerator and seriously injure themselves.
 o not touch the cold surfaces in the freezer compartment when hands are damp or wet. Skin may stick
to these extremely cold surfaces.
 o not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other
appliance
 Keep fingers out of the “pinch point” areas; clearances between the doors and between the doors and
cabinet are necessarily small; be careful closing doors when children are in the area.
NOTE: We strongly recommend that any servicing be performed by a qualified individual.
 Unplug the refrigerator before cleaning and making repairs.
 Setting temperature controls to the ZERO (0) position does not remove power to the light circuit,
perimeter heaters, or evaporator fans.
Refrigerant Disp sal
Your old refrigerator may have a cooling system that uses “Ozone epleting” chemicals. If you are throwing
away your old refrigerator, make sure the refrigerant is removed for proper disposal by a qualified service
technician. If you intentionally release any refrigerants you can be subject to fines and imprisonment under
provisions of the environmental regulations.

11
Service and Installation Manual
ault Probable Cause Action
Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker.
Power cord unplugged Plug in power cord
Compressor is Not Running
Thermostat set too high Set thermostat to lower temperature
Thermostat is set too high Set thermostat to lower temperature.
Airflow is blocked
Re-arrange products to allow for proper
air flow. Make sure there is at least
four inches of clearance from the fan
Low refrigerant levels Contact a service technician to check
refrigerant levels
Cabinet Temperature is too Warm
Door is slightly ajar Make sure door is completely closed.
Poor switch connection Turn off light switch and turn it back on.
Bulb is not connected Make sure the bulb is correctly inserted
in the socket.
Interior Light is Not Working
Bulb has burned out Replace the bulb
Condensation is Collecting on the
Cabinet and/or Floor Gasket is not sealing properly Clean, repair, or replace the gasket as necessary
 Please ensure that the required voltage is being supplied at all times.
 The unit should be plugged into a grounded and properly-sized electrical outlet with appropriate
over-current protection. NEVER USE AN ADAPTER PLUG!
 The unit should have its own dedicated outlet.
 Do not use extension cords.
 Do not unplug your unit by pulling on the power cord. Grip the plug firmly and pull straight out from the
outlet.
 Ensure the unit is not resting on or against the electrical cord.
 If the unit is not in use for a long period of time, best to unplug the unit from the outlet.
 To avoid shock and fire hazards, do not plug in or unplug the unit with wet hands.
 After unplugging the unit, wait at least 10 minutes before plugging it back in. Failure to do so could
cause damage to the compressor.
 If the power cuts off, wait at least 5 minutes before turning the unit on to avoid damage to the
compressor.
ELECTRICAL WARNING
TROUBLE SHOOTING

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WIRING DIAGRAM
MODEL: MXX-23RHC
MODEL: MXX-23FHC

Service and Installation Manual
13
WIRING DIAGRAM
MODEL: MXX-23RHC

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WIRING DIAGRAM
MODEL: MXX-23FHC

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1-151-297
3355 Enterprise Ave., Suite 160 - Ft. Lauderdale, FL 33331
T: [phone] - F: [phone]
www.maxx-cold.com